The game allows the player to watch over Earth over billions of years (game time of course) and watch the rise of Mankind, if the player can get that far. Asteroids and aliens will try to make contact and its up to the player to protect our world by tapping the screen to shatter all inbound threats. As the game progresses, the player can keep track of Earth’s progress in the top right corner.

If you crave destruction, you can also allow some asteroids to wipe out certain civilizations and life forms, forever altering time as we know it. Some great possibilities are the dinosaurs never going extinct, and our ancestors never getting the chance to evolve.

The game’s cheap and sounds like it has loads of replay value. If you have an iPhone or an iPad, this game can keep you busy for a while.